Which component is listed as part of the Other Emission Related Components/Systems category for visual inspection?

• A. Add-On Aftermarket Parts
• B. Oxygen Sensor
• C. Radiator
• D. Fuel Pump

Answer: (A)

In the visual inspection, there’s a category for items that aren’t the standard OEM emission control parts but can still influence emissions—things that are added or aftermarket modifications. Add-On Aftermarket Parts fits this slot because these are components someone might install that affect how the emission system works, so they’re evaluated under this “Other Emission Related Components/Systems” group. An Oxygen Sensor is a core part of the emission control system itself and is checked under its own, more specific category. Radiator belongs to the cooling system, and a Fuel Pump is part of the fuel delivery system, not an emission-related add-on. So the item that belongs in that category is Add-On Aftermarket Parts.